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54 lines
1.9 KiB
54 lines
1.9 KiB
/*
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* CombineCatchLocal (c) 1998 Jochen Hoenicke
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*
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* You may distribute under the terms of the GNU General Public License.
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*
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* IN NO EVENT SHALL JOCHEN HOENICKE BE LIABLE TO ANY PARTY FOR DIRECT,
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* INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
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* THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF JOCHEN HOENICKE
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* HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* JOCHEN HOENICKE SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
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* BASIS, AND JOCHEN HOENICKE HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
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* SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* $Id$
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*/
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package jode;
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import java.util.Vector;
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import sun.tools.java.Identifier;
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public class CombineCatchLocal implements Transformation{
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// static Identifier idException = Identifier.lookup("exception");
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public InstructionHeader transform(InstructionHeader ih) {
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CatchInstructionHeader catchIH;
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LocalInfo local;
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try {
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catchIH = (CatchInstructionHeader)ih;
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ih = ih.nextInstruction;
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if (ih.getPredecessors().size() != 1)
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return null;
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Instruction instr = ih.getInstruction();
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if (instr instanceof PopOperator) {
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local = new LocalInfo(99);
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} else if (instr instanceof LocalStoreOperator) {
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local = ((LocalStoreOperator) instr).getLocalInfo();
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} else
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return null;
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} catch (ClassCastException ex) {
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return null;
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} catch (NullPointerException ex) {
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return null;
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}
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if (!catchIH.combineWithLocal(local))
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return null;
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if(Decompiler.isVerbose)
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System.err.print("c");
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return catchIH;
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}
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}
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